David gtjelbaum



Patented Aug. 23, 1 921.

D. GUELBAUM.

APPLICATION FILED JAN.5, 1921.

CLOSED HIGH TEMPERATURE GAS BURNER.

Illllllll UNITEDHSTATES PArENT gorrilca.`v`v

DAVID GUELBAUM, OF'SYRAGUSE, NEW YORK.

' To all whom it may concern:

Beit known that I, DAVID GUELBAUM, acitizen` of the United States, and aresident of Syracuse, in the county of Onondaga and Stateioff'New York,have invented a Closed 'High-Temperature Gas-Burner, of which the.following is a specification.

This invention has vfor its object a gas burner that gives highertemperatures with less gas consumption than all now existing burners.rTo obtain such Vhigher eiiiciency the burner is soI designed, that, whencombined with the container or utensil to be; heated, a thoroughlyinsulated and closed space is formed, like the combustion chamber of amodern boiler plant.

The air and gas mixture, ready to be ignited, enters acircularcone-beveled slot in the centerrof that closed space, in theshape Y of a continuous conical sheet stream, the

sired. Y

VPrevious to entering the closed space, the air and gas aremixed andproportioned, by means of amixing and proportioning valve, in just theright ratio, corresponding to the maximum temperature of the resultingcornbustion gases. t

The outlet for the products of combustion from'thatclosed space takesplace through the circumferential clearance between the.

rim ofthe burner body and the bottom of the containerv or utensil; saidclearance, being adjustable, may be closedv entirely, or opened up asmuch as required for the outlet vof the combustionl gases, but Withoutpermitting outside airv to Vget into the closed combustion chamber.

c The invention consists in the above .set forth novel features,embodied in the combinations and constructionsliereinafter set forth anddescribed.

. In describingthis invention, reference is had to the accompanyingdrawings, in which like characters designate corresponding parts in: allthe views.

Figures 1 and 2 are respectively, ,a vertical sectional view and a topview, or plan, of my closed high'temperature gas burner.

. Figs.v 3, 4, 5, 6, and 7 and 11 are details of the various parts of myinvention.

. Figs. 8 and 9 show the adaptation of my invention to the melting ofmetals.

g Fig. 10 shows its adaptation to temperature-eiioiency tests. j

Thisclosed burner comprises generally a Specification ofVLetters*Patent. patgnted Aug. VApplication led January 5,1921. SerialNo. 435,185.

thickness'of which can be regulated asdev CLOSED HIGH-TEMPERATUREGAS-BURNER.

Fig. 1, and consisting of a rim 1 with a recess or well 2 in lngconnected together by the radial ribs 3.

The intermittent spaces between the ribs are `filled flush to the top ofrim and well with heat insulating composition (not shown on the drawing)resting on the bottom plate 4, made preferably of light sheet metal andfastened to the bottom flange of the rim and to the bottom detail onFig. 7.

The bottom of the well 2 is providedwith a hub 5 carrying a revolvingpivot 6, the bottom of which is joined fastto the lever'7 `and tothelocking washer 8 byineans of the` IheXagon head of the tap bolt 9, thuspreventing the bolt from turning relative to the pivot'and gettingloose.

The other end -of the lever 7 is bent up aroundv the bottom flange ofthe rim 1, as shown on Fig. 1. y swinging the lever 7, the pivot 6 isturned inside the burner one way or the other, or kept stationary at anyposition. Y At its top the pivot 6 is provided with a lpin 1Q the endsof which pass through two kopposite in'clined slots on the sleeve 11,-which is slidingly fitted on shown on Figspl and 3 and in developmenton Fig. 4.

The vertical portions of the slots shown on Fig.l 4; are provided forconvenience of e assembling, as will be explainedhereinafter.

The sleeve 11 fits tight into the hub 12 of the central valve 13,both-sleeve and valve-being setscrewed together immovably, as shown onFigs. 1 and 3.

The top of the well 2 and the top of the valve 13 are both cone beveledand fitted con- .c'entrically into each other.

The kvalve 13 is provided with a lugv14 at its bottom, fitting betweentwo lugs 15 von the well 2, as shown on Figs. 1, 3 and 5 thus, thevalve13 and the sleeve 11 are prevented from turning, but are free to move`up 'or down.

Therefore, by swinging the lever 7 one way or the other and thus turningthe pivot the pivot 6, asY

hollow base or frame, shown in` section on i the center, rim and wellbeof the well, as shown in 6 with the pin 10, the latter will slidealong the inclined slots in the sleeve 11, pushing the sleeve with thevalve up or down and thus opening` or closing the concentric conicalpassage between the valve and the well. rlhe pivot 6 is provided withtwo pin holes at 90o to each other .for changing the position of thelever 7 to suit location, where re uired. Y j

n Fig. 1 the valve 13 is shown in its highest position, with the conicalpassage yiully open.

The swing of the lever 7 is limited by the two stops 16 and the stop 16,located as shown on Fig. 2 in plan, and consisting of l'A-headed boltswith the nuts and llocking washers inside the burner, as shown on Fig.7.

Normally the valve 13 is held fast in its' position, against the upwardpressure of the gas, by the pin 10 in the pivot, as on Figs. 1 and 3.-In order Vto take the valve out of the well, the lever 7 is sprungupward, passed over the stop 16 and brought close to the stop 16a Fig.2.- In that position the ends of the pin 10 come right over the verticalportions .of the slots shown on Fig. 4, and vthe valve with the sleevecan be lifted out of the well.

When the valve is returned to its seat, the

VThe well 2 is connected with the outside wall ofthe burner by thepreferably tapered nozzle 17, cast into the body .of the burner, as onFigs..1 and 2, and surrounded by the heat insulating composition.

Into that nozzle 17 is screwed in the.con nection fitting 18, providedwith a threaded nipple 19 for a gas pipe connection and with airopenings and an air shutter 20, for air inlet and its regulation.

Thus, the combustion mixture of gas and air, ready for ignition, entersat the bottom of the wel-l 2 and passes through the concentric conicalpassage between the valve and the well in the form of a concentricconical sheet stream of any desired thickness. i The radial ribs 3 Figs.1 and 2 partly project above the top face of the burner frame, forsupporting the container or utensil 20 Fig. 1 to lbe heated.

As seen from the vertical section of the burner, Fig. 1, the spacebetween the bottom of the container or utensil and the top face of theburner is closed, and abstraction of heat from the liame by thesurrounding air is thus prevented, and as the burner and valve bodiesare filled with heat insulating composition, as previously mentioned,the outside surface of the burner will remain comparatively cool, andloss of heat by radiation and from contact with outside air willlikewise be prevented.

Around the burner rim 1, at its top, is slidingly litted a ring 21preferably made of a light sheet metal strap with the ends welded orriveted together, as shown on Fig. 1 and in development on Fig. 6.

The ring is provided with three inclined projections, sliding on thelugs 22 castv on the outside of the burner, as shown on Figs. 1 and 6,thereby raising or lowering the ring 21 and thus closing up or openingthe circumferential passage for the exhaust between Vthe container 2Oand the top face of the burner. @n Fig. 1 that passage is shown onlhalfopen.

VCrraduation marks on the inclined projections of the ring show itsexact position and the size of the exhaust outlet at any time.

[is Vshown on Fig. 6 one or" the inclined projections is provided withtwo lugs limiting the swing of the ring, and at vthe middle of eachprojection there is a small flap 23 cut out of the strap and bent up toserve as a grip for swinging the ring.

ln case the bottom of the container or utensil is smaller or larger indiameter than the outside diameter oi' the burner, then a plate ring 24is provided, shown invdash and dot on Fig. 1, supported by the ring 21and raised or lowered together with that ring. Y

The valve 13 and the sleeve 11 are provided with a iew teeth orprojections 25 at their top, as shown on Figs. 1, 2, 3 and 4, for thepurpose of preventing the formation of a closed pocket inside thesleeve, just above the pivot 6, and also for supporting very smallutensils to be heated.

The burner is provided with four lugs 26 cast on the body, as shown onFigs. 1 and 2, with pins 27 screwed into these lugs and slightly rivetedover. These pins serve as legs for supporting the burner, or they may bereplaced by separator bolts for fastening the burner to a permanenttable stand.

Figs. 8 and 9 show the adaptation of the closed burner to the meltingofmetals. The burner is the same as on Fig. 1, and is shown in elevationwith the exhaust exitV regulating ring in section; but instead of acontainer or utensil closing up the space lover the burner, a sphericalinsulated dome is here used with a melting pot inside.l

A sheet metal jacket surrounds the dome, the intermittent space beingfilled up with heat insulating compos-ition.- The dome is provided atits top with a lifting ringV and two washers for fastening the jacket,and at its bottom inside it has three lugs 28 resting on the top of theburner and fitting around the ribs 3, as shown on Fig. .9.

In order* to obtain the highest possible temperature the gas and airconnection itting 18, shown ion Figs. l and 2, is here replaced by .anautomatic gas and air mixing and proportioning valve, which combines theair and gas in a fixed quantitative ratio conducive to the highesttemperature, and for which a separate patent application has been madeby same applicant.

Fig. 10 shows partly the application of the closed burner totemperature-eiilciency tests for various gas and liquid fuels. The domeand burner here used are the same as on Fig. 8, with the only differencethat the dome is provided with a mercury well for receiving thethermometer, and with the lifting plate 29.

The same dome without the insulating jacket, but provided with surfaceribs inside and outside for rapid heat absorption Vand transmission, mayserve as a regular room heater. i

The above described closed high temperature gasburner may be usedsingly, or several may be piped up together in a batteryk and fastenedto a proper stand, or installed in existing stoves and ranges.

The advantages claimed for this burner over those 4now existing are: v i

1. The variability of the flame aperture and of the exhaust outlet, bothmade adjustable by wide handy movements, will conduce to more efficientand rapid heat transmission.

2. The combustion space in my burner being closed, the exhaust gasesexit regulated, and the outside air prevented from entering thecombustion space, there will be no abstraction of heat from the flame byits being exposed to open contact with the surrounding air, as is thecase in now existing burners. Hence, my burner will give a higher flametemperature and a more rapid heat transmission, with the consequentsaving in time and fuel.

3. There is no loss Aof heat by radiation or through contact withoutside air from the burner surface exposed to hot combustion gases, myburner being closed and thoroughly insulated; thus, in my burner, moreheat will be saved and transmitted.

4. The direct regulation of the flame aperture, without changing theentrance pressure and velocity of the combustion mixture, will result ina steady fiame and prevent rebounding of same with escape of part of thecombustion mixture unburned through the air openings, as may bewitnessed by the smell of gas in existing burners.

5. The thorough insulation in my burner of the nozzle for admission ofthe combustion ,mixture, from the point of its entrance to the verypoint of its outlet into the closed space under the container, will keepthe entering combustion mixture stream far below its ignitiontemperature, and no premature ignition can take place.

6. 'Ihe gradual widening and narrowing ofthe entering combustion mixturestream effected in my burner will prevent impacts and reboundings of thestreamwith its consequent partial escape unburned through the airopenings, as witnessed by the gas smell in presentburners.

In cases where it is desired to have a flame aperture of a constant andfixedV size, then,v the construction of the valve and pivot issimplified, as shown on Fig. 1l, where the sleeve is left out, and thehub l2 of the valve is screwed on direct to the pivot 6 and issetscrewed to same immovably in any desired position. Y

`The pivot is fastened in the hub 5 of the well with a tap Vbolt andlocking washer, the same as in the previous case, but with theregulating lever omitted.

What I claim is: Y

1. A closed high temperature gas burner,

comprising ahollow base or frame with a V and well against access of thesurrounding air, a central valve with a cone beveled top concentric withthe cone beveled top of the well and having a hub in the center, meansfor raising and lowering the valve, thus opening or closing theconcentric passage between well and valve, substantially as and for thepurposes specified.

2. A closed high temperature gas burner, comprising a hollow base orframe with a rim and radial ribs, a well in the center, a nozzle betweenthe rim and the well, and a plate closing up the open spaces between therim and the well and fastened or cast on to the same, a central valvewith a hub in the center, and a sleeve fitted and setscrewed into thehub and having two opposite oblong slanting slots, means for raising andlowering the sleeve with the hub and the valve for opening or closingthe concentric passage between the well and the valve, substantially asand for the purpose described.

3. A closed high temperature gas burner, comprising a hollow base orframe with a rim, radial ribs, a well in the center, a closing plate, anozzle between the rim and the well, a central valve with a hub, asleeve fitted and secured into the `same and having opposite slantingslots, and a rotative pivot supported in the hub of the well and fittedslidingly into said sleeve and provided with a pin 'whose ends enter theoppositeslots of the sleeve, thus raising and lowering sleeve and valve,substantially as and for the purpose set forth.

4. A closed high temperature gas burner, comprising'a hollow base orframe with a rim, radial ribs, a well and a closing plate, a centralvalve with a lug at its bottom fitting between two similar lugs on theinside ofy the Vwell to prevent the valve froin turning but leaving 1tfree to Inove up or down, a pivot inside Vthe hub of the valve, and alever having one end fastened to the bottom of the pivot and its otherend extending to the edge of the rim and passing around the bottomflange on the same, for operating the pivot, sleeve and valve, the swingof the lever being limited by provided stops and its position indicatedby graduation marks, substantially as and for the purpose described.

^ 5. A closed high temperature gas burner, comprising a hollow base orframe with a rim, radial ribs, a well, a nozzle between the riin and thewell, a closing plate, a central valve with pivot and lever, andacylindrical plate ring slidingly fitted around the top of the rim andhaving slanting oblong projec- -tions resting on lugs on the outside ofthe rim and provided with suitable stops and grips for rotating the samearound the rim and thereby raising or lowering it to the desiredposition, substantially as and for the purpose specified.

6. A closed high temperature gas burner, comprising` a hollow base orframe with a rim, radial ribs, a well, a nozzle between the well and therim, and a connecting piece screwed into the outer end of the nozzle andprovided with air inlet openings, air shutter and a threaded hub with anipple for a gas inlet connection, substantially as and for the purposedescribed.

7. A closed high temperature gas burner, comprising a hollow base orframe with a rim and radial ribs supporting a well or re- `cess` in thecenter and projecting partly above the top face of the riin and thewell, a closing plate, a central valve with hub, pivot andlever, acylindrical plate ring with suitable supports, stops and grips, and aflat plate ring, carried on top of the cylindrical plate ring and havingan outside diameter to suit the diameter of the container to be heated,substantially as and for the purpose set forth. Y'

8. A closed high temperature gas burner, comprising a hollow base orframe with a rim, radial ribs, a well or recess in the eenter, a nozzlebetween the well and the rim with a gas and air supply connectionattached, a closing plate, a central valve with pivot and lever, acylindrical plate ring with a changeable flat plate ring on top, andwith lugs cast or fastened on the outside of the fra-Ine or rim and withpins of any desired length screwed and fastened into'these lugs, toserve as supporting legs for the burner frame, substantially as and forthe purpose described, A

ln testimony whereof, have hereunto signed iny narne,fat Syracuse, inthe county of Onondaga, and State of New York.

DAVlD GUELBAUM.

esA

